Contents

Background

Go Uru was the first son of Bukbuyeo's 3rd ruler, Go Haesa
Dangun. Go Uru was made Crown Prince of Bukbuyeo under his
father's reign. He was also the brother of Emperor Hae Buru, the
founder of Dongbuyeo. Go
Uru apparently produced no heirs as he was succeeded by his brother
after his death in 86 BCE.

Reign

After the death of Go Haesa, in 121 BCE, Crown Prince Go Uru
rose to the throne to become the 4th Dangun of Bukbuyeo. Wiman Joseon began to disintegrate
and Bukbuyeo continued to carry on the legacy of Jinjoseon by marking Wiman Joseon as an
enemy. Go Uru Dangun attacked Wiman Joseon to the point that
Wiman's economy was withering thin. It was at around this time that
Han
Wudi turned his attention towards the northeast and attacked
Wiman Joseon endlessly for a year. Taking advantage of the
situation, Go Uru Dangun sent an army to harass Wiman Joseon's
borders and also named his great great-uncle, Go Jin, "Gori-King Go Jin," which put Go Jin in
charge of Gori-guk, which was Hae Mosu's land of origin. Wiman Joseon
eventually fell in 108 BCE, but a new source of trouble came for Go
Uru Dangun during that same year when a young man named Go
Dumak-Han declared himself the "Son of Heaven." Go Dumak-Han
established Dongmyeong-guk, and continued to fight against the
troops of the Han Dynasty. Go Dumak sent a messenger to Go Uru
Dangun during this year, telling him to move his capital so that
the Dongmyeong-guk capital could be built in Bukbuyeo's capital
location. With this, Go Dumak ended with giving the threat of
heavenly punishment. Go Uru Dangun pondered on the solution to such
a problem between nations and eventually died of stress in 86
BCE.

Succession

In 86 BCE, Go Uru Dangun was succeeded by his brother Hae Buru,
who was eventually pushed eastward by the armies of Dongmyeong-guk,
led by Go Dumak himself. Go Dumak established himself as Dangun of
Bukbuyeo and became the 5th ruler of Bukbuyeo during that same
year, renaming the empire "Jolbon Buyeo."